The couple had talked about David becoming HaLeigh's legal father for quite some time and began the process in November, but immediately hit a snag.

"We hit a bump in the road and we all thought it was not going to happen," Angel explained. "My husband and daughter still thought we were at a standstill so when I received the new birth certificate in the mail on Feb. 1, 2018, I was shocked and at that moment knew I was going to surprise him."

In the video, Angel asks David, who is sitting next to HaLeigh, to read the letter aloud and the heartwarming moment brought the dad to tears.

The letter read:I know your birthday is 13 days away but I am too excited to hold it in. What do you get a man that never wants? I can sit and ponder all day but in the end, I know nothing would make you happier than what I am about to say... Today 2-1-2018 will be a day we will cherish forever as we grow old... HaLeigh Danielle Abila is now HALEIGH DANIELLE TREVINO! Happy birthday and Happy Valentine's Day.

You stole her heart from day 1 but today she stole your last name forever.